|Publication number||US7976559 B2|
|Application number||US 11/263,744|
|Publication date||Jul 12, 2011|
|Filing date||Nov 1, 2005|
|Priority date||Nov 4, 2004|
|Also published as||US7963976, US20060094932, US20060094933, US20120116398|
|Publication number||11263744, 263744, US 7976559 B2, US 7976559B2, US-B2-7976559, US7976559 B2, US7976559B2|
|Inventors||Michael A. Goldfarb, Eric Goldfarb|
|Original Assignee||Dynamic Surgical Inventions, Llc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (22), Referenced by (17), Classifications (18), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This nonprovisional patent application claims priority from provisional patent application Ser. No. 60/625,153, filed Nov. 4, 2004, entitled Laparoscopic Finger, which provisional application is incorporated herein by reference in its entirety.
The present invention relates to surgical devices, and more particularly to an articulated finger-like probe adapted for positioning within a patient's body, and suitable for assisting minimally-invasive surgery. The present invention further relates to surgical procedures in which one or more articulated finger-like probes of the present invention are used to assist minimally-invasive surgical procedures.
There has been a discernible tendency in surgery to develop procedures and devices that reduce the need for major surgical incisions which entails extended hospitalization, and increased wound complications such as infections and post operative hernias. These minimally-invasive surgical procedures and devices (i.e., endoscopic and/or laparoscopic surgical procedures and devices) have been especially, but not exclusively, important in abdominal, thoracic, gynecologic, urologic and orthopedic operations. Typically, a scope that is arranged with an external camera and light source, enter the abdominal cavity or joint through two or more small incisions along with one or more surgical instruments. The indicated surgical procedure is then performed by manipulating the long-handled surgical instruments while viewing their actions on a video monitor that receives images of the surgical site from the video camera.
While certain minimally invasive surgical techniques are in practice, there are significant disadvantages which have, to date, limited the applications for these techniques. For example, the standard laparoscopic instruments used in many minimally invasive procedures do not provide the surgeon the ability to mimic open surgical hand dissection techniques. Additionally, manipulation of fragile friable tissues can be difficult and often damaging while manipulating sharp and or small tipped tools inside the body cavity from outside the body. It is often the case that the surgeon would ideally prefer, to actually handle, manipulate, or even dissect a portion of tissue with his or her fingers during surgery, as this activity often provides the most sensitive feedback to the surgeon.
Many minimally invasive techniques are difficult due to the limited access provided to the surgical site, in which tools and viewing scopes are often inserted through narrow cannulae. Some surgeons, therefore, adopt a “hand assisted” approach. To accomplish this approach an incision large enough to accommodate a surgeon's hand is made in the abdomen. The surgeon then views his or her hand dissecting, on a video monitor, enabled by a laparoscope positioned appropriately. Unfortunately most of the time the surgeon's dissecting hand blocks the view of the dissection performed by the fingers. In addition only the operating surgeon can appreciate the course of the operation when the dissection is accomplished by palpation and direct vision is not possible. For certain operations, the hand assisted approach is a link along the learning curve to a laparoscopic approach. Again, with a hand assisted approach, an incision large enough to accommodate a surgeon's hand is created. An incision that is capable of accommodating a surgeons hand renders the procedure conventionally invasive, even though the laparoscope and other instruments are inserted through other small abdominal openings.
A number of devices have been proposed in the prior art that attempt to simulate the manipulative capabilities of a surgeon's finger during surgery. For example, in U.S. Pat. No. 5,522,788, issued to Kuzmak, a blunt laparoscopic dissector device is provided which includes an elongate dissector element including a “finger-like” flexible distal end portion. A cylinder or barrel member disposed at one end of a pair of pivotable control arms provides rotatable mounting of the dissector element. A control assembly, including a control rod connected to the other control arm and extending along the length of the dissector element, exerts a force on the dissector element so as to produce the desired curvature of the flexible distal end portion. A locking mechanism maintains the force on the dissector element so as to maintain the desired curvature. Rotation of the dissector element within the cylinder allows for control of the movement of the device's tip while holding the device in a comfortable stationary position. This device has a “pistol” style handle and forceps-style finger grips. There is no kinesthetic relationship between the tip of the index finger and the tip of the instrument, such that the precise movement of the finger tip is not reflected exactly by the instrument tip. Tactile feedback may be attenuated by the use of concatenated driving and driven elements.
In U.S. Pat. No. 5,810,716, issued to Mukherjee et al., a surgical device is provided for use in minimally invasive surgery that is suited for tele-surgery. The surgical device provides dexterity through articulation of a plurality of concatenated segments that transfer angular rotational motion from a driving device located at its base to the distal end. Each segment in the mechanism acts as both a driven element and a driving element whereby each segment is articulated so that the total articulation of the mechanism is the sum of the articulation motions of each segment. Here again the kinesthetic relationship between the surgeon's fingertip and the tip of the instrument is not exactly reproduced. The tactile feedback needed by the surgeon may be obfuscated by the use of concatenated driving and driven elements.
In U.S. Pat. No. RE38,335, reissued to Aust et al., a surgical device is provided for use in minimally invasive surgery that includes a handle, a first stem section having a longitudinal axis and extending from the handle, and a tissue engaging member for engaging tissue. A second stem section, connected between the first stem section and the tissue engaging member, has a portion which is bendable and supports the tissue engaging member for movement between a plurality of orientations relative to the axis and to the first stem section. The surgical instrument includes a system for bending the bendable portion of the second stem section to change the orientation of the tissue engaging member relative to the axis and to the first stem section from a first orientation to a second orientation. The bendable portion of the second stem section includes a member for enabling bending movement of the bendable portion to locate the tissue engaging member at the same angle relative to the longitudinal axis of the first stem section at more than one location along the length of the bendable portion. However the exact kinesthetic relationship between the surgeon's fingertip and the instrument tip is not possible. Once again the tactile feedback may be filtered by the handle articulation mechanisms.
The foregoing and other prior art devices do not allow a precise kinesthetic relationship between a surgeon's fingertip and the dissecting instrument tip. Those prior art devices may have a limited tactile sensing ability transferred to the surgeon. PCT/US97/11494 teaches a number of surgical instruments which can be mounted directly on a surgeon's fingertip in a way that the surgeon can insert his or her hand into a natural cavity of the patient or through one or more minimal incisions to perform surgical procedures, and also to use his or her fingers to manipulate tissues, thus enabling the surgeon to perform the procedures with the benefits of minimally invasive surgery, but with much greater tactile sense, control, and ease of manipulation. However, these surgical instruments (i) are carried by a finger and operated by the thumb, and are not applicable for procedures in which a single finger is employed for tactile sensing of an intrabody location; (ii) include an operating head which permanently extends far beyond the fingertip on which the surgical instrument is mounted, which limits the tactile sensing for the surgeon; and/or (iii) prevent tactile sensing by the instrument carrying the fingertip altogether.
There is a widely recognized need for, and it would be highly advantageous to have, a finger-like surgical probe devoid of the limitations associated with prior art instruments, and which closely simulates a surgeon's finger, or fingers, so as to enable a surgeon to handle, manipulate, or dissect a portion of tissue through an incision of the type employed during minimally invasive surgical procedures, and maintain a kinesthetic relationship with the surgeon's fingertip.
The present invention provides a surgical probe having an articulated digit located at a distal end of a positioning shaft that defines a longitudinal axis. An actuator is located at a proximal end of the positioning shaft and is operatively connected to the articulated digit so as to move the articulated digit between a continuous range of positions from an extended position to a substantially curved position while maintaining a kinesthetic relationship between a surgeon's finger engaging the actuator and the articulated digit, i.e., the extent of flexion or extension of the surgeon's finger is mimicked by the flexion or extension of the articulated digit such that forces transmitted between the surgeon's finger and the articulated digit are transmitted in a manner that provides functional sensation to the operator.
In one embodiment, a surgical probe is provided that includes an articulated digit located at a distal end of a positioning shaft having a longitudinal axis. An actuator is located at a proximal end of the positioning shaft so as to be operatively connected to the articulated digit. In this way, when the actuator moves, a kinesthetic relationship is maintained between a surgeon's finger engaging the actuator and the articulated digit. The articulated digit moves through a continuous range of positions that directly correspond with a continuous range of surgeon's finger positions attained when engaging the actuator so that the articulated digit moves between a fully extended position and a substantially curved or crook position.
In another embodiment, a surgical probe is provided that includes an articulated digit located at a distal end of a positioning shaft having a longitudinal axis, with a bulbous probe-tip that supports a sponge or gauze wad for use in blunt dissection. An actuator is located at a proximal end of the positioning shaft that is operatively connected to the articulated digit. In this way, the articulated digit may move between a continuous range of positions from an extended position to a substantially curved position while maintaining a kinesthetic relationship between a surgeon's finger engaging the actuator and the articulated digit. Preferably, the surgeon's finger position and shape directly correspond to the position and shape of the articulated digit.
In a surgical method according to the invention, a surgeon is provided with a surgical probe that includes an articulated digit located at a distal end of a positioning shaft having a longitudinal axis. An actuator located at a proximal end of the positioning shaft is operatively connected to the articulated digit so as to move the articulated digit between a continuous range of positions from an extended position to a substantially curved or crook position while maintaining a kinesthetic relationship between the surgeon's finger engaging the actuator and the articulated digit. The surgeon positions the surgical probe adjacent to an anatomical structure to be manipulated or palpated, and moves the actuator with a finger so as to arrange the articulated digit in a configuration that closely corresponds to the configuration of that finger. An anatomical structure may then be engaged and retracted, palpated, dissected, or otherwise probed with the articulated digit in a manner corresponding to manual manipulation and palpation of the anatomical structure during open surgical procedures with either gentle or firm movements of the articulated digit, including the application of torque to the anatomical structure.
These and other features and advantages of the present invention will be more fully disclosed in, or rendered obvious by, the following detailed description of the preferred embodiment of the invention, which are to be considered together with the accompanying drawings wherein like numbers refer to like parts and further wherein:
This description of preferred embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description of this invention. The drawing figures are not necessarily to scale and certain features of the invention may be shown exaggerated in scale or in somewhat schematic form in the interest of clarity and conciseness. In the description, relative terms such as “horizontal,” “vertical,” “up,” “down,” “top” and “bottom” as well as derivatives thereof (e.g., “horizontally,” “downwardly,” “upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing figure under discussion. These relative terms are for convenience of description and normally are not intended to require a particular orientation. Terms including “inwardly” versus “outwardly,” “longitudinal” versus “lateral” and the like are to be interpreted relative to one another or relative to an axis of elongation, or an axis or center of rotation, as appropriate. Terms concerning attachments, coupling and the like, such as “connected” and “interconnected,” refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. The term “operatively connected” is such an attachment, coupling or connection that allows the pertinent structures to operate as intended by virtue of that relationship. In the claims, means-plus-function clauses, if used, are intended to cover the structures described, suggested, or rendered obvious by the written description or drawings for performing the recited function, including not only structural equivalents but also equivalent structures.
When digit 3 is assembled, curved proximal end 30 of distal phalanx 26 is pivotally connected to flat distal end 22 of middle phalanx 18 by, e.g., a pivot pin 40, and curved distal end 12 of elongate proximal phalanx 10 is pivotally connected to curved proximal end 24 of middle phalanx 18 by a pivot pin 41. In this way, the phalanges may pivot relative to one another so that digit 3 comprises a range of motion that is continuous between a first fully extended position that may be, for example, aligned with a longitudinal axis 43 of positioning shaft 5, and often substantially coaxial with positioning shaft 5, and a final substantially curved, flexed, crook, or “hook-shaped” position, i.e., curved or bent relative to positioning shaft 5.
This range of motion of digit 3 is limited by the interactive engagement of curved proximal end 30 of distal phalanx 26 with flat distal end 22 of middle phalanx 18 and curved distal end 12 of elongate proximal phalanx 10 with curved proximal end 24 of middle phalanx 18. In the first fully extended position, the upper or dorsal portion of curved proximal end 30 of distal phalanx 26 is blocked from further pivotal rotation by the upper or dorsal portion of flat distal end 22 of middle phalanx 18, and the upper or dorsal portion of curved distal end 12 of elongate proximal phalanx 10 is blocked from further pivotal rotation by the upper or dorsal portion of curved proximal end 24 of middle phalanx 18. Likewise, in the final flexed or crook position, the lower or anterior portion of curved proximal end 30 of distal phalanx 26 is blocked from further pivotal rotation by the lower or anterior portion of flat distal end 22 of middle phalanx 18 and the lower or anterior portion of curved distal end 12 of elongate proximal phalanx 10 is blocked from further pivotal rotation by the lower or anterior portion of curved proximal end 24 of middle phalanx 18. Thus digit 3 can be operated so as to simulate or mimic the range of movements and configurations of a surgeon's finger 42, while at the same time, maintaining a kinesthetic relationship between the surgeon's finger 42 and digit 3 (
Bulbous probe-tip 32 projects outwardly from distal end 28 of distal phalanx 26 so as to provide a tactile pad or surface 29 for use in manipulating, palpating or dissecting tissue during surgery (
Positioning shaft 5 comprises an elongate tube having a distal end 44, a proximal end 46, and a central passageway 48 (
Detachable articulated digit 73 may be fastened to positioning shaft 75 of articulated surgical probe 70 by first arranging proximal end 84 of proximal phalanx 80 in confronting coaxial relation with open end 121 of positioning shaft 75. Once in this position, articulated digit 73 is moved toward positioning shaft 75 so that mounting hub 110 slips into open end 121 and central passageway 48 of positioning shaft 75. As this occurs, each terminal 117 on wires 115 a and 115 b are received within a corresponding receptacle 122 so that each releasable mounting knob 119 at mating end 120 engages a releasable mounting socket 124. Once mounting hub 110 is fully received within open end 121 of positioning shaft 75, pivotal shaft lock 126 is pivoted about its position on the outer surface of positioning shaft 75 until it engages blind recess 111 in the outer surface of proximal end 84 of proximal phalanx 80. Each pivotable receptacle clamp 130 is then actuated so as to releasably clamp each mounting knob 110 within its respective mounting socket 124 thereby completing the operative interconnection of wires 115 a, 115 b, 115 c and 115 d. With detachable articulated digit 73 fully engaged with positioning shaft 75, operation of articulated surgical probe 70 follows in accordance with the operation of articulated surgical probe 1.
As with articulated digit 3, the phalanges of detachable digit 73 may pivot relative to one another so that articulated digit 73 comprises a range of motion that is continuous between a first fully extended position that may be, for example, aligned with the longitudinal axis of positioning shaft 75, and often substantially coaxial with positioning shaft 75, and a final substantially curved, flexed, crook, or “hook-shaped” position, i.e., curved or bent relative to positioning shaft 75. Thus digit 73 can be operated so as to simulate the range of movements and configurations of a surgeon's finger 42, while at the same time, maintaining a kinesthetic relationship between the surgeon's finger 42 and articulated digit 73. The surgeon's perception or sensing of the motion, weight, and position of articulated digit 73, relative to the tissue being probed, is maintained as the muscles, tendons, and joints of the surgeon's finger 42 move.
It should be understood that, although less preferred, the toggle lever and wire assembly of articulated surgical probes 1, 70, and 140 may be replaced by a motorized motivator, e.g., a miniature servo-motor, of the type well known in the art, so long as, the kinesthetic relationship between the surgeon's actuating finger 42 and the articulated digit 3, 74, or 143 are maintained. Alternatively, and now referring to
As with articulated digit 3, when articulated digit 173 is in a first fully extended position, the upper or dorsal portion of the proximal end of distal phalanx 190 is blocked from further pivotal rotation by the upper or dorsal portion of the distal end of middle phalanx 184, and the upper or dorsal portion of the distal end of proximal phalanx 178 is blocked from further pivotal rotation by the upper or dorsal portion of the proximal end of middle phalanx 184. Likewise, in a final flexed or crook position, the lower or anterior portion of the proximal end of distal phalanx 190 is blocked from further pivotal rotation by the lower or anterior portion of the distal end of middle phalanx 184, and the lower or anterior portion of the distal end of proximal phalanx 178 is blocked from further pivotal rotation by the lower or anterior portion of the proximal end of middle phalanx 184.
Numerous advantages are obtained by employing the present invention. The position of any of articulated digits 3, 74, 143, or 173 in, e.g., the abdomen of a patient, is mirrored by the position of the surgeon's finger 42 on toggle 60 (
For example, with a laparosopic approach it is often difficult and time consuming to dissect around certain structures compared to open surgery. Dissection around the esophagus (
Advantageously, an articulated surgical probe formed in accordance with the foregoing preferred embodiments may be actuated so as to apply a variable amount of force to its articulated digit by flexing and or pulling or pushing the entire device (
Articulated surgical probe 1 allows dissection movements similar in force to a surgeon's finger. The force applied by articulated digit 3, 73, 143, or 173 can be from very gentle, subtle movements to firm, strong dissection. Gentle movement is often necessary near blood vessels or tenuous tissues. Stronger dissection, for example, is necessary to peel the rectum away from the sacrum. Both types of procedures may be done without any structural change being made to articulated surgical probes 1, 70, or 140. Articulated surgical probes 1, 70, or 140 additionally provide for increased retraction, when digit 3, 73, 143, or 173 is flexed, as compared to a straight prior art instrument. In this technique, handle 62 remains relatively parallel to the patient's body, e.g., the abdominal wall. In contrast, with a straight prior art instrument, when retracting the stomach, for example, the prior art handle must be levered to about 90 degrees in order to enable the same amount of retraction.
In prior art dissection procedures, viscera is often retracted with stiff grasping tools. This can cause inadvertent tearing of the bowel, which may require surgical repair. Articulated surgical probe 1 also provides for gentle but secure retraction of viscera when in either a locked or unlocked position. Gentle retraction of soft parts of viscera is essential to avoid inadvertent damage. Because there is tactile feedback resulting from the straight, in-line relation between handle 62, positioning shaft 5, and digit 3, 73, 143, or 173, the retracting or dissecting with digit 3, 73, 143, or 173 is less apt to cause damage than the straighter, less tactile, instruments of the prior art. Furthermore, the present invention is less apt to cause damage than prior art small tipped instruments of the prior art which often do not transmit forces directly to the surgeon, and often have sharp tips.
A locked position, via actuation of locking mechanism 52, allows the surgeon to hold articulated surgical probe 1 anywhere along the instrument, so that hand fatigue can be avoided. The unlocked position allows for multiple changes as to where the viscera is held for retraction, during dissection. Countertraction of tissue or viscera can be accomplished with articulated surgical probe 1 as well. This countertraction, i.e., away from the point of dissection, is part of the traction-countertraction action inherent to open surgical maneuvers, and difficult with prior art small tipped laparoscopic instruments.
Advantageously, articulated surgical probe 1 allows palpation of masses, such as tumors inside the colon, with bulbous probe-tip 32. The tactile feed-back provided by the in-line relationship of handle 62, positioning shaft 5, wires 50 a,50 b, and digit 3 helps direct a surgeon as to the margins of resection of a tumor. Otherwise, a section of intestine could be removed without encompassing the tumor. In current minimally invasive surgery, this is only discovered upon opening the specimen after it is removed from the patient.
In some instances, dissection of structures, such as the gallbladder from the liver bed with digit 3, can copy the techniques used by the surgeon's own finger during open gall bladder dissection, e.g., peeling away the gallbladder from the liver bed. Laparoscopic dissection, particularly in difficult cases, therefore can be made faster and safer. In addition, when there is intra operative bleeding during laparoscopic surgery, it is difficult to apply direct pressure with an “end-on” application of a prior art instrument, especially if the bleeding is slightly above or below the immediate point of dissection. Since digit 3 of articulated surgical probe 1 flexes, bulbous probe-tip 32 can apply direct pressure so that bleeding can be controlled in a quicker, more reliable fashion, approximating very closely the same maneuver utilizing the surgeon's finger.
When various staplers are employed to divide intestine or stomach, tissue planes adjacent to viscera can be dissected in order to explore the anatomy with articulated surgical probe 1 or prepare an organ or organ part for removal. This manipulation is similar to what is often done in open surgery. Furthermore, the stapler distal tip may be difficult to visualize, on a television monitor. Articulated digits 3, 74, 143, or 173 of articulated surgical probes 1, 70, 140, and 172 can support the distal stapler tip so as to optimize the application angle, as well as, assure that the proper amount of intestine is lined up for the division. Inadvertent inclusion of unwanted tissue can be avoided as well as incomplete application of the stapler.
It is to be understood that the present invention is by no means limited only to the particular constructions herein disclosed and shown in the drawings, but also comprises any modifications or equivalents within the scope of the claims.
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|U.S. Classification||606/190, 600/141|
|International Classification||A61B17/00, A61B1/00|
|Cooperative Classification||A61B2017/00367, A61B2017/00336, A61B2017/003, A61B17/0218, A61B17/2833, A61B2017/2927, A61B2017/2905, A61B17/02, A61B2017/00323, A61B2017/2947, A61B2017/320044, A61B46/17|
|European Classification||A61B17/02E, A61B17/02|
|Apr 11, 2007||AS||Assignment|
Owner name: DYNAMIC SURGICAL INVENTIONS, LLC, NEW JERSEY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GOLDFARB, MICHAEL A.;GOLDFARB, ERIC;REEL/FRAME:019149/0434;SIGNING DATES FROM 20070403 TO 20070404
Owner name: DYNAMIC SURGICAL INVENTIONS, LLC, NEW JERSEY
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GOLDFARB, MICHAEL A.;GOLDFARB, ERIC;SIGNING DATES FROM 20070403 TO 20070404;REEL/FRAME:019149/0434
|Dec 29, 2014||FPAY||Fee payment|
Year of fee payment: 4